MCQ Work Chapter 11 Class 9 Science

MCQ’s For All Chapters – Science Class 9th

1. There will be total 14 MCQ in this test.
2. Please keep a pen and paper ready for rough work but keep your books away.
3. The test will consist of only objective type multiple choice questions requiring students to mouse-click their correct choice of the options against the related question number.
4. No negative marking for incorrect choice.
5. Please click on “Finish the Test” when you want to exit.
6. All the best – Happy Studying

1. Work done by a body is

negative, positive or zero

always positive

always zero

always negative

Question 1 of 14

2. A 500 kg cloth bag is pulled up a smooth plane 6m long to platform 4m above the ground. The work done is: (Take g = 10 ms^-2)

2 x 10⁴ J

2 x 10³ J

2 x 10² J

2 x 10⁵ J

Question 2 of 14

3. Calculate the work done in moving a body of mass 50 Kg through a height of 5 m.(g = 10m/s²)

250 J

2500 J

25 x 10³ J

2.5 x 10⁵ J

Question 3 of 14

4. Scientifically, work is said to be done in which of the following cases

Manish pulls the trolley for a certain distance

Mira studies for her exam

Manoj pushes the wall with no change in the position of wall

Mira pulls the wall with no change in the position of wall

Question 4 of 14

5. Calculate the distance between the man and the box when the work done to move the box was 100 J with a force of 15 N.

6 m

16.6 m

26.6 m

6.6 m

Question 5 of 14

6. A body of mass 5 kg is moving with an acceleration of 5 ms^-2 gets a displacement of 2m, the work done by the force is:

75 J

25 J

100 J

50 J

Question 6 of 14

7. A force of 6 N acts on a body of mass 3 kg producing a displacement of 10 m. The work done by the force is

30 J

60 J

18 J

36 J

Question 7 of 14

8. To lift 700 kg of water, through a height of 10 m we use a pump. The work done in operating the pump is;
Take g = 10 m/s².

7 kilo joules

7 x 10⁶ J

700 J

70000 J

Question 8 of 14

9. A coolie was standing with 2 suitcases on his head and 2 bags in his hand. The luggage exerted a force of 159 N on him. What is the amount of work done by him?

79.5 J

318 J

0 J

159 J

Question 9 of 14

10. The winners of long jump each weighing 56 Kg, 40 Kg and 45 Kg stand on the podium. What is the work done by them on the podium while they receive the medals?

250 J

0 J

282 J

141 J

Question 10 of 14

11. Assertion-the unit of work is Nm

Reason-Nm is the SI unit of work where N is used for No. Of atoms.

a) Both Assertion and Reason are correct, and reason is the correct explanation for assertion.

b) Both Assertion and Reason are correct, and Reason is not the correct explanation for Assertion.

c) Assertion is true but Reason is false.

d) Both Assertion and Reason are false.

Question 11 of 14

12. Assertion-the unit of work is Nm

Reason- Nm is the SI unit of work where N is used for Newton and m is used for meter.

a) Assertion and Reason are correct, and reason is the correct explanation for assertion.

b) Assertion and Reason are correct, and Reason is not the correct explanation for Assertion.

c) Assertion is true but Reason is false.

d) Assertion and Reason are false.

Question 12 of 14

13. Assertion- The baby has exerted a force in the direction of displacement of the car that time work done by force which is under positive sign.

Reason-work is only happen when force get multiply by displacement.

a) Assertion and Reason are correct, and reason is the correct explanation for assertion.

b) Assertion and Reason are correct, and Reason is not the correct explanation for Assertion.

c) Assertion is true but Reason is false.

d) Assertion and Reason are false.

Question 13 of 14

14. Assertion : Gravitational force is conservative force.
Reason :Work done by or against gravitational force in moving a body from one point to another is independent of the actual path followed between the two points.

a.) Both Assertion and Reason are correct, and reason is the correct explanation for assertion.

b.) Both Assertion and Reason are correct, and Reason is not the correct explanation for Assertion.

c.) Assertion is true but Reason is false.

d.) Assertion is false but Reason is true.

Question 14 of 14

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